Patents by Inventor Sandra H. Angelo

Sandra H. Angelo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reactive coatings comprising an acid-functional compound, an anhydride-functional compound, an epoxy-functional compound and a hydroxy-functional compound
    Patent number: 5580926
    Abstract: Curable compositions which comprise:(i) an acid-functional compound having an average of at least two carboxylic acid groups per molecule; and(ii) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhydride groups per molecule; and(iii) an epoxy-functional compound having an average of at least one epoxy group per molecule; and(iv) a hydroxy-functional compound having an average of at least two hydroxyl groups per molecule;wherein at least one of the compounds (i), (ii), (iii) or (iv) comprises a film forming polymer.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: December 3, 1996
    Assignee: The Sherwin-Williams Company
    Inventors: Mohamad D. Shalati, James A. Marquart, Sandra H. Angelo, Rodney M. Harris
  • Substrate coated with a basecoat and/or a clearcoat of an acid-functional compound, an anhydride-functional compound, an epoxy-functional compound and a hydroxy-functional compound
    Patent number: 5043220
    Abstract: A substrate coated with a basecoat of a pigmented film-forming polymer and a clearcoat applied to the basecoat of a film-forming polymer wherein the clearcoat and/or the basecoat is a curable composition comprising(i) an acid-functional compound having an average of at least two carboxylic acid groups per molecule; and(ii) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhydride groups per molecule; and(iii) an epoxy-functional compound having an average of at least one epoxy group per molecule; and(iv) a hydroxy-functional compound having an average of at least two hydroxyl groups per molecule;wherein at least one of the compounds (i), (ii), (iii) or (iv) comprises a film forming polymer.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: August 27, 1991
    Assignee: The Sherwin-Williams Company
    Inventors: Mohamad D. Shalati, James A. Marquart, Sandra H. Angelo, Rodney M. Harris